PIN_NOT_SET
#define DEFAULT_LCD_PIN_BL PIN_NOT_SET
static int lcd_e_pin = PIN_NOT_SET;
static int lcd_rs_pin = PIN_NOT_SET;
static int lcd_rw_pin = PIN_NOT_SET;
static int lcd_cl_pin = PIN_NOT_SET;
static int lcd_da_pin = PIN_NOT_SET;
static int lcd_bl_pin = PIN_NOT_SET;
if (lcd_e_pin != PIN_NOT_SET)
if (lcd_rs_pin != PIN_NOT_SET)
if (lcd_rw_pin != PIN_NOT_SET)
if (lcd_cl_pin != PIN_NOT_SET)
if (lcd_da_pin != PIN_NOT_SET)
if (lcd_bl_pin != PIN_NOT_SET)
if (lcd.pins.cl == PIN_NOT_SET)
if (lcd.pins.da == PIN_NOT_SET)
if (lcd.pins.e == PIN_NOT_SET)
if (lcd.pins.rs == PIN_NOT_SET)
if (lcd.pins.rw == PIN_NOT_SET)
if (lcd.pins.bl == PIN_NOT_SET)
if (lcd.pins.e == PIN_NOT_SET)
if (lcd.pins.rs == PIN_NOT_SET)
if (lcd.pins.rw == PIN_NOT_SET)
if (lcd.pins.bl == PIN_NOT_SET)
if (lcd.pins.cl == PIN_NOT_SET)
if (lcd.pins.da == PIN_NOT_SET)